<p>It is a distance between two bores for handle set prep.</p>
<img src="https://cdn.livechat-static.com/api/file/kb/file/12590274/0a174741ed-5055d5b6b0fb2af66a21.png" alt="undefined" style="float:none;height: undefined;width: undefined"/>
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<p>MORTISE LOCK VS TUBULAR LOCK&nbsp;</p>
<img src="https://lcdn.doornmore.com/pub/media/wysiwyg/pages/door-preparation/mortise-tabular-lock.jpg" alt="Lock" style="float:none;height: auto;width: "/>
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<p style="text-align:left;">MORTISE LOCK BORE</p>
<img src="https://lcdn.doornmore.com/pub/media/wysiwyg/pages/door-preparation/mortise-lock-bore.jpg" alt="Lock" style="float:none;height: auto;width: "/>
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<p style="text-align:left;">DOUBLE BORE</p>
<img src="https://lcdn.doornmore.com/pub/media/wysiwyg/pages/door-preparation/double-bore.png" alt="Double Bore" style="float:none;height: auto;width: "/>
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<p style="text-align:left;">SINGLE BORE&nbsp;</p>
<img src="https://lcdn.doornmore.com/pub/media/wysiwyg/pages/door-preparation/single-bore.jpg" alt="Lock" style="float:none;height: auto;width: "/>
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It is a distance between two bores for handle set prep.
 


MORTISE LOCK VS TUBULAR LOCK 
 




MORTISE LOCK BORE
 



DOUBLE BORE
 



SINGLE BORE 
 


Center to Center Distance - Lock Prep

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